Anna Maree used to play netball and basketball in winter and played beach and indoor volleyball during summer when she was in a boarding high school.[2] She was raised in Karamea on the South Island's west coast and in 2002 joined the New Zealand national netball team, the Silver Ferns, travelling to the Commonwealth Games with the team as a training player.[1] She went on to earn 39 caps in the Silver Ferns by the end of 2006.[3] but was not selected for the 2007 World Netball Championships squad, subsequently retiring from netball to focus on beach volleyball,[3] partnering with Susan Blundell.[4]

After several years on the international beach volleyball circuit, Harrison left the sport in 2010 and announced her intention to return to netball.[5] She signed with the Northern Mystics for the 2011 season of the ANZ Championship,[5] and also regained her place in the Silver Ferns lineup for 2010.[6] She made the team for the 2010 Commonwealth Games, where she was used in the Wing Defence position throughout the pool games. She was not named in the starting line-up for the final, but was injected into the game at half time, in the unfamiliar WD position,[7] and helped to turn around the deficit and win the gold medal.[8]

During the 2012 ANZ Championship season, Anna was married to sports scientist Craig Harrison.[9] She made the Silver Ferns again in 2012, and was used mainly in WD, to cover the loss of Joline Henry.[10]

In the 2012 ANZ Championships, Harrison was lifted up by her teammate in order to successfully block a shot above the rim, during the round 8 match against the Melbourne Vixens. It was pulled off two more times in the game. The controversial move was dubbed the 'Harrison Hoist' by the media, and attracted a massive response from fans and casual netball followers, many believing the move should be banned. She has performed this move several times since, including on the international scene.[11]

In February 2013, Harrison announced that she was three months pregnant and did not take part in the 2013 ANZ Championship.[12]

On 1 September 2013, Anna gave birth to her and Craig's first child, a son, Isaac and in 2015 gave birth to a daughter, Georgia.[13]

Harrison announced her retirement in 2018, and was the pioneer of the Harrison Hoist, similar to the line-out maneuvre in rugby union, the move is used to hoist her up above the rim to block shots, as there are no goaltending rules in netball, as it would in basketball, and block shots are not a statistical category in netball.[14]